D What Is The Par For Stroke That Is Attributable To High Cholesterol In This Population If We Assume The Prevalence Of 1 (77.43 KiB) Viewed 83 times
D What Is The Par For Stroke That Is Attributable To High Cholesterol In This Population If We Assume The Prevalence Of 2 (82.52 KiB) Viewed 83 times
d. What is the PAR for stroke that is attributable to high cholesterol in this population if we assume the prevalence of high cholesterol in the population is 30 percent? e. What is the attributable risk (risk or rate difference) of high versus low cholesterol? f. Now suppose that a number of subjects drop out of the study by the end of the ten years so that there are really only 30,000 person-years of exposure for those with low cholesterol, 15,000 person-years for those with moderately high cholesterol, and 20,000 person-years for those with high levels of cholesterol. Using the incidence density approach, what is the relative risk of stroke for those with high cholesterol compared to those with low and moderate cholesterol combined?
3. Suppose that you designed a study to examine the association between cholesterol levels and the risk of stroke. Your study population was a group of 3,700 randomly selected men and women in whom you measure total cholesterol level at study baseline. You defined a level of < 200 mg/dl as low cholesterol, 200–250 mg/dl as moderately high, and > 250 as high cholesterol. Study investigators informed participants of their baseline cholesterol levels. After 20 years, 30/1,500 subjects with low cholesterol suffer strokes, 25/1,000 with moderately high cholesterol suffer strokes, and 60/1,200 with high cholesterol suffer strokes. Assume denominators are actual number of subjects in three cholesterol level categories. Also assume that the low-cholesterol group is the unexposed group.
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